Muffler.



E. w SPERRY..

MUFFLER.

APPLICATION FILED SEPT. 22. 1911.

Patented Aug. 10, 1915.

FRED 'W'. SPERRY, 0]! PORT BYRON, NEW YORK.

MUFFLER.

Specification of Letters Patent.

Patented Aug. 10, 1915.

Application filed September 22, 1911. Serial No. 650,735.

To all whom it may concern Be it known that I, FRED W. SPERnY, a citizenof the United States, and a resident of Port Byron, in the county ofCayuga and State of New York, have invented certain new and usefulImprovements in Mufliers, of which the following is a specification,reference being had to the accompanying drawings.

This invention relates to mufiiers for gas engines and aims primarily toprovide a muffler arranged to heat the air, drawn into the enginecylinder at the intake stroke, through the medium of the heated exhaustissuing from the cylinder. Therefore, the invention aims to provide amuiiler which will serve as a means for economizing in the consumptionof fuel and will render the engine more eflicient in its operation.

Further, the invention aims to so construct the mufiier that the heatedexhaust erable period of time so that the full benefit will be derivedtherefrom in heating the air taken into the engine cylinder.

1 With these and other objects in view the present invention consists inthe combination and arrangement of parts as will be hereinafter morefully described and finally pointed out in the appended claim, it beingfurther understood that changes in the specific structure shown anddescribed may be made within the scope of the claim, without departingfrom the spirit of the invention.

In the accompanying drawings forming a part of this specification, andin which like numerals of reference indicate similar parts in theseveral views: Figure 1, is a view partly in side elevation and 'partlyin elevation of the muflier embodying the present invention, and Fig. 2,is a vertical transverse sectional view on the line 2, 2, of Fig. 1.

The mufiier embodying the present inven tion comprises an outer shell 1,and an inner shell 2, both of which are cylindrical although they may beof any other desired shape. The inner shell is of a diameter less thanthat of the outer shell. These shells are connected and closed at theirends by means of heads 3 and 4; that is to say, the inner shell isclosed at both ends by the said heads and the space between the shellsis closed at the ends of the shells by the said heads. It will thus beseen that the outer shell forms a jacket for the inner shell. Within thespace between the two cylindrically held shells there are arranged aplurality of bafiie plates 5 and 6, which are substantially semi-annularin form, and these plates are alternately reversed, as clearly shown inthe drawings, so that the ends of the plates 5 project between the endsof the plates 6, and vice versa. At one end of the shell 1,

and preferably at the ugper side thereof there is connected a pipe whichserves to conduct the heated air to the engine cylinder, and at theopposite end of the said shell and preferably at its under side, thereis connected an intake nipple 8. The end of the intake nipple is closedexcept for open ings 9, formed therein, and rotatably fitted upon theend of the said nipple is a cap 10 provided with openings 11, adapted toregister with the openings 9, for the purpose of admitting air throughthe nipple, it being understood that the cap may be rotated so as toregulate the quantity of air admitted. The exhaust entering the innershell passes through an inlet pipe 12, opening through the head 3, andescapes by way of a pipe 13, opening through the head 4, and between thetwo heads within the shell 2, are arranged baiile disks 14, formed withopenings 15. The disks 14, are so arranged that their openings 15, willbe located alternately at opposite sides of the axes of the shells, asshown in full and dotted lines in Fig. 2, of the drawings.

When the mufiler embodying the present invention is placed in use, thepipe 7, is connected with the air intake of the engine, and the pipe 12,is connected with the exhaust. As the exhaust gases pass through theinner shell, they circulate between the baiiie plates or disks 14, andthrough the openings therein and pass out by way of the pipe 13. Intheir passage through the inner shell, the gases heat the wall thereofand this heat is communicated to the air which is taken in through theintake pipe 8, so that when this air enters the engine cylinder and ismixed with the vaporized fuel, it will be in a heated state, althoughnot deprived of any of its oxygen. More eflicient working of the engineis thus insured. It will be understood at this point that the heatedexhaust gases, as well as the intaken air are retarded in their passagethrough the mufiier and that consequently the full benefit is derivedfrom the heat given ofi by the exhaust.

Having thus described my said invention, What I claim as new'and desireto secure by United States Letters Patent is.

A muflier comprising an outer cylindrical shell, of heads closing theends of said shell, an inner shell secured to said heads of a lessdiameter and held concentric to said outer shell, a plurality ofsemi-annular bafile plates alternately reversed and arranged between thetwo Shells, the ends of one set of plates projecting between the oposite set of plates, whereby the gas is m e to pass up and down inescaping through sa1d drum, an exit pipe extending from one end and theupper side of said outer shell,

an intake nipple at the other end and under side of said shell, arotatably held perforated cap closing said nipple, a plurality of disksarranged within said inner drum having openings located alternately atoppositesides of the axis of said inner drum, whereby the air passingthrough said drum is made to pass from side to side, one of said endshaving an inlet, and the other an escape opening communicating with saidinner drum, as and for the purpose set forth. In testimon Y whereof Iafiix my signature, in presence 0 two witnesses.

FRED W. SPEBRY. Witnesses:

WILLIAM BLAKE, EARL W. BLAKE.

